The National Wildlife Federation

Donate Donate

Doing The Numbers

Since its founding, NWF has witnessed some dramatic changes in the wildlife and natural environment it was created to protect

  • Hannah Schardt
  • Feb 01, 2006
SINCE ITS FOUNDING in 1936, the National Wildlife Federation has witnessed some dramatic changes in the wildlife and natural environment it was created to protect. Here are a few of them:

Change in total U.S. fossil fuel consumption per person, per year between the mid-1930s and today: +102 percent

Estimated number of adult wild salmon and steelhead entering the Columbia River and its tributaries, mid-1930s: 10-16 million

Estimated number of adult wild salmon and steelhead entering the Columbia River and its tributaries, today: 500,000

Number of dams built in the Columbia River Basin since the 1930s: More than 200

Acres of Louisiana coastal wetlands lost to river diversion projects since the 1930s: One million

Number of whooping cranes in North America, mid-1930s: 16

Number of whooping cranes in North America, today: 453

Change in the number of bald eagle pairs nesting on the shores of Chesapeake Bay, 1936–1977: -530

Change in the number of bald eagle pairs nesting on the shores of Chesapeake Bay, 1977–today: +576

Number of gray wolves living in Yellowstone National Park, 1936: 0

Number of gray wolves living in Yellowstone National Park, today: 300

Get Involved

   Please leave this field empty

Where We Work

More than one-third of U.S. fish and wildlife species are at risk of extinction in the coming decades. We're on the ground in seven regions across the country, collaborating with 52 state and territory affiliates to reverse the crisis and ensure wildlife thrive.

Learn More
Regional Centers and Affiliates